Evaluating the Impact of Highway-Railway Grade Crossings on Travel Time Reliability on a Highway Network Level

Zifeng Wu, Laurence R. Rilett, Yifeng Chen

Research output: Contribution to journalArticle

1 Scopus citations

Abstract

Highway-rail grade crossings (HRGCs) have a range of safety and operational impacts on highway traffic networks. This paper illustrates a methodology for evaluating travel-time reliability for the routes and networks affected by trains traveling through HRGCs. A sub-area network including three HRGCs is used as the study network, and a simulation model calibrated to local traffic conditions and signal preemption strategies using field data is used as the platform to generate travel time data for analysis. Time-dependent reliability intervals for route travel time are generated based on route travel-time means and standard deviations. OD level reliability is calculated using a generic reliability engineering approach for parallel and series systems. The route travel time reliability results can be provided as real-time traffic information to assist drivers’ route-choice decisions. The OD level reliability is a way to quantify the impact of HRGCs on highway network operation. This effort fills the gap of reliability research for HRGCs on the route and sub-area network level, and contributes to improving the efficiency of decision-making for both traffic engineers and drivers.

Original languageEnglish (US)
Pages (from-to)1-11
Number of pages11
JournalTransportation Research Record
Volume2672
Issue number10
DOIs
StatePublished - Dec 1 2018

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Mechanical Engineering

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